cURL error 7: Failed to connect to api.mailgun.net port 80: Timed out (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)?

[vipin733]

I try to simple sending mail but I by laravel 5.4 ` $data = [];

   Mailgun::send('emails.school', $data, function ($message) {
     $message->to('vipxxxxx7@yahoo.in', 'John Smith')->subject('Welcome!');
 });

` But getting error "Failed to connect to api.mailgun.net port 80:"